Create an empty 2D Numpy Array / matrix and append rows or columns in python
In this article we will discuss how to create an empty matrix or 2D numpy array first using () and then append individual rows or columns to this matrix using…
Create an empty Numpy Array of given length or shape & data type in Python
In this article we will discuss different ways to create an empty 1D,2D or 3D Numpy array and of different data types like int or string etc. (more…)
Check if all elements in a list are None in Python
In this article we will discuss different ways to check if a list contains only None or not. (more…)
6 ways to get the last element of a list in Python
In this article, we will discuss six different ways to get the last element of a list in python. Get last item of a list using negative indexing List in…
Python: Check if a list or list of lists is empty or not
In this article we will discuss four different ways to check if a list is empty or not. Then we will also see how to check if a list of…
How to create and initialize a list of lists in python?
Creating a list of lists in python is a little tricky. In this article, we will discuss 4 different ways to create and initialize list of lists. (more…)
Python: Read a file in reverse order line by line
In this article we will discuss an efficient solution to read the contents of a text or CSV file in reverse order either line by line or get them as…
Python: How to create an empty list and append items to it?
In this article, first we will discuss different ways to create an empty list and then we will see how to append elements to it using for loop or one…
Python: Read CSV into a list of lists or tuples or dictionaries | Import csv to list
In this article we will discuss how to import a CSV into list. This list can be a list of lists, list of tuples or list of dictionaries. We will…
Python: How to insert lines at the top of a file?
In this article, we will discuss how to insert single or multiple lines at the beginning of a text or CSV file in python. (more…)